I understand the sentiment and where it comes from, and I'm not saying it's a good decision from Broadcom (I think it is a bad one indeed!). But still, this risk is part of the game. Even if it was full opensource and with a broad community, it was still a single vendor, not even a non-profit umbrella like the Apache or Linux Foundation. So, the risk of trusting a single vendor was there.

The good thing of it being opensource is that someone else (company, community, foundation or whatever) can step in, fork it, and maintain it from now on, unlike what happens with proprietary software or SaaS.